399395 has 12 divisors (see below), whose sum is σ = 504336. Its totient is φ = 303600.

The previous prime is 399391. The next prime is 399401. The reversal of 399395 is 593993.

It is not a de Polignac number, because 399395 - 2² = 399391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2570 + ... + 2720.

It is an arithmetic number, because the mean of its divisors is an integer number (42028).

2³⁹⁹³⁹⁵ is an apocalyptic number.

399395 is a deficient number, since it is larger than the sum of its proper divisors (104941).

399395 is a wasteful number, since it uses less digits than its factorization.

399395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 179 counting only the distinct ones).

The product of its digits is 32805, while the sum is 38.

The square root of 399395 is about 631.9770565456. The cubic root of 399395 is about 73.6434639110.

The spelling of 399395 in words is "three hundred ninety-nine thousand, three hundred ninety-five".